Janice Dickinson's On-air Meltdown Over Bill Cosby

Former supermodel Janice Dickinson went nuclear on live TV over the Bill Cosby scandal.

She shouted, "We've got to stop this man! He'll keep doing it!"

Dickinson's meltdown came as she was interviewed by Nancy Grace, repeating her claim thatCosby drugged and raped her in 1982.

She yelled, "I'm no tacky (blank)! Bill Cosby is a tacky rapist!"

She sobbed, waved her arms, and yelled at the top of her lungs.

Dickinson said, "It is my right as a woman, as a parent, to protect women out there worldwide, and to protect daughters and granddaughters, sisters and mothers! Ok?"

Viewers immediately flooded HLN's website with comments like: "This woman is NUTS!!!!! She does not appear to be credible," and "Super model? No, a messy mess."

Cosby's lawyer has called Dickinson's claim, "A complete lie."

Dickinson said to Nancy Grace, "Janice Dickinson doesn't lie!"

We spoke today to the HLN host.

Nancy Grace told INSIDE EDITION, "A lot of people make fun of her, say she'll do anything for P.R. I don't believe that. There are a million ways to get P.R. other than claiming one of America's beloved TV icons, Bill Cosby, raped you."

Janice Dickinson told Nancy Grace, "It's about time that this guy gets his comeuppance."